8540231385 has 64 divisors (see below), whose sum is σ = 16147759104. Its totient is φ = 3771705600.

The previous prime is 8540231377. The next prime is 8540231387. The reversal of 8540231385 is 5831320458.

It is not a de Polignac number, because 8540231385 - 2³ = 8540231377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8540231387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2247307 + ... + 2251103.

It is an arithmetic number, because the mean of its divisors is an integer number (252308736).

Almost surely, 2^8540231385 is an apocalyptic number.

It is an amenable number.

8540231385 is a deficient number, since it is larger than the sum of its proper divisors (7607527719).

8540231385 is a wasteful number, since it uses less digits than its factorization.

8540231385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4534.

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 8540231385 is about 92413.3723278184. The cubic root of 8540231385 is about 2044.0423007938.

The spelling of 8540231385 in words is "eight billion, five hundred forty million, two hundred thirty-one thousand, three hundred eighty-five".